Telegram vs WhatsApp: who can reach whom, and what it costs

By Mara Vogel Published 18 October 2026 17 min read

Most Telegram vs WhatsApp comparisons stop at a feature checklist: file sizes, stickers, themes. That list rarely changes anyone's choice. What changes it is the contact model underneath each app: whom you are allowed to message first, how many people one post can reach, who holds the keys to the messages, and what a business pays per message once software does the sending. This guide reads both apps on those four questions, then places Signal, Session, Threema and iMessage on the same grid.

Every Telegram figure below comes from a Telegram page read on 18 October 2026, and every WhatsApp figure from a WhatsApp or Meta page, each named beside the number under the sourcing rules these guides follow. Sendhaus, an independent studio for Telegram messaging and automation, has no affiliation with Telegram Messenger Inc. or Meta, and earns nothing from either app's adoption.

What is the contact model behind Telegram vs WhatsApp?

WhatsApp is a phone-book messenger: an account is a phone number, and conversations start with people whose number you already hold. Telegram is a cloud messenger with a public layer: accounts can be found by username, chats sync from Telegram's servers to every device, and channels and public groups let one account publish to strangers who chose to follow. The rest of the WhatsApp vs Telegram comparison follows from that split.

Telegram describes itself in its FAQ as "like SMS and email combined", with "groups for up to 200,000 people or channels for broadcasting to unlimited audiences". WhatsApp's own framing is narrower. Its security page leads with "Default privacy" and the promise that "No one can search for your phone number or read your personal messages." One app is built to be found; the other is built not to be.

That difference shapes every row that follows. A WhatsApp user who wants a wider audience has to collect phone numbers or followers for a Channel. A Telegram user can share a t.me link, and anyone who taps it can join without exchanging numbers. The mechanics of sending a Telegram message to a DM, group or channel all rest on that username layer, which WhatsApp does not offer in the same form.

Telegram vs WhatsApp features on one table

On core features the two apps overlap: both send text, voice notes, photos, video and files, both run voice and video calls, and both are free to download. The Telegram vs WhatsApp features that actually differ are capacity and openness: group size, channel reach, file limits, username search, cloud sync and a free bot platform. The table lists each with the source that publishes it.

Two rows are left without a number on purpose. WhatsApp states its file and call limits in Help Center articles that change with app versions, and copying a figure from a vendor blog would break the rule this page follows. The rows that matter for an audience, group size, channel reach and bots, all carry primary sources.

Telegram vs WhatsApp security: is encryption on by default?

On Telegram vs WhatsApp security, the documented gap is the default. WhatsApp encrypts personal messages and calls end to end using the Signal Protocol, so WhatsApp's servers relay content they cannot read. Telegram encrypts cloud chats between your device and its servers, then stores them encrypted in its own data centers; only Secret Chats, which you must start on purpose, are end to end. Telegram can technically decrypt cloud chats; WhatsApp says it cannot read personal chats.

Telegram's FAQ states the arrangement plainly: "Server-client encryption is used in Cloud Chats (private and group chats), Secret Chats use an additional layer of client-client encryption." It also explains why: cloud messages stay "immediately accessible from any of your devices". Telegram's answer to the obvious risk is jurisdiction, not cryptography. Cloud chat data, the same FAQ says, is "stored in multiple data centers around the globe that are controlled by different legal entities".

"Secret chats use end-to-end encryption, thanks to which we don't have any data to disclose."Telegram FAQ, telegram.org/faq

Groups and channels sit outside that protection on Telegram: Secret Chats exist only between two people. WhatsApp groups are end to end like personal chats, but WhatsApp Channels are not; WhatsApp's launch post says "channels are not end-to-end encrypted by default". The fair summary for Telegram vs WhatsApp security: for one-to-one talk WhatsApp's default is stronger unless the Telegram user opens a Secret Chat; for public broadcasting neither app encrypts end to end.

Telegram vs WhatsApp privacy: phone numbers, metadata and storage

Telegram vs WhatsApp privacy splits along a different line from security. WhatsApp protects message content but requires a phone number for every contact and belongs to Meta, which runs advertising businesses. Telegram stores more content on its servers, yet lets users hide their phone number behind a username and states in its privacy policy that it does not sell data. Which is more private depends on whether you fear the content being read or the contact graph being known.

Telegram's privacy policy keeps metadata used against spam for "12 months maximum" and allows "automated algorithms to analyze messages in cloud chats to stop spam and phishing". That second clause is the cost of the cloud model: content WhatsApp cannot see, Telegram can scan. On the other side, WhatsApp Channels keep an admin's number private ("your phone number and profile photo won't be shown to followers") and store channel history "for up to 30 days", according to the June 2023 launch post.

For anyone running a public presence, the number question decides most cases. A Telegram channel admin never exposes a phone number to subscribers, and neither does a subscriber. In a WhatsApp group, every member can see every other member's number, which is the main reason community organisers move large groups to Telegram once membership passes friends of friends.

Telegram vs WhatsApp users: what do the headcounts mean?

Telegram vs WhatsApp users, as each company reports them: WhatsApp passed 3 billion monthly users, a figure Meta gave on its first-quarter 2025 earnings call, and Telegram reports "over 1 billion active users" in its FAQ and "more than 1 billion users" in its privacy policy. Both are company claims, not audited counts. WhatsApp reaches roughly three times as many people; Telegram reaches more of them through public, followable channels.

A headcount answers "is the person I want to reach on this app?", which is a geography question. WhatsApp is the default phone messenger across large parts of Latin America, Europe, Africa and South Asia; Telegram's user base is concentrated differently and is strongest where public channels serve as a news and community layer. Before choosing either for a business, the useful check is your own customers: ask them, or look at which app they already message you on.

Headcount is also not audience. A channel's subscriber count can be inflated, and the numbers inside Telegram's own statistics are the ones that matter. The risks of bought Telegram subscribers and fake counters apply to anyone tempted to close the gap with WhatsApp by purchase rather than content.

Telegram group vs WhatsApp group: how many people, and who sees whom?

In a Telegram group vs WhatsApp group comparison, capacity differs by a factor of about 195. Telegram groups hold up to 200,000 members, per Telegram's FAQ, with admin roles, slow mode, topics and join requests. WhatsApp groups hold up to 1,024 members, a limit WhatsApp set when it launched Communities on 3 November 2022, and Communities link several such groups under one announcement channel. WhatsApp groups are end-to-end encrypted; Telegram groups are cloud chats.

Joining works differently too. A WhatsApp group grows through an admin adding saved contacts or sharing an invite link. A Telegram group can be public, found by search or link, and new members see the full history when the admin allows it. Telegram limits how members get in from the admin side: the rules for adding members to a Telegram group or channel include a 200-person cap on direct invites to channels, and privacy settings let users refuse to be added at all.

For a WhatsApp group vs Telegram group decision, the practical tests are size and exposure. Under a few hundred people who already know each other, a WhatsApp group is simpler and keeps content end to end. Above that, or when members should not see each other's numbers, a Telegram group scales without changing apps. Bots that admit members are covered in what an invite member bot can and cannot add; most of them manage join requests rather than pulling people in.

Telegram channel vs WhatsApp channel: what can each broadcast?

In a Telegram channel vs WhatsApp channel comparison, both are one-way broadcast feeds where followers do not see each other. A Telegram channel allows "an unlimited number of subscribers", per Telegram's Channels FAQ, keeps full history for new subscribers, supports comments through a linked discussion group, scheduled posts and statistics. A WhatsApp channel, launched in June 2023, sends text, photos, video, stickers and polls, keeps history on WhatsApp's servers for up to 30 days and is not end-to-end encrypted.

"Channels are a tool for broadcasting public messages to large audiences. In fact, channels can have an unlimited number of subscribers."Telegram Channels FAQ, telegram.org/faq_channels

The WhatsApp channel vs Telegram channel gap shows most in discovery and growth. Telegram channels have public usernames, appear in global search and Similar Channels, can be bundled into shareable folders, and can be promoted through Telegram's own ad platform. The full set of promotion routes Telegram allows for channels and bots has no WhatsApp equivalent beyond the Updates tab directory. A WhatsApp channel's advantage is that its audience already has WhatsApp open every day.

A channel on either app is a pull medium: people subscribe, and the admin posts to them. Neither channel type lets an admin message followers individually. On Telegram, private one-to-one sending to an audience runs through a bot the user has started, the route covered in the six supported ways to send bulk Telegram messages.

Telegram bot vs WhatsApp bot: what does each cost per message?

The Telegram bot vs WhatsApp bot difference is mostly price and permission. A Telegram bot is free to create through @BotFather and free to run on the Bot API, sending about 30 messages per second in bulk before paid broadcasts start. A WhatsApp bot runs on Meta's WhatsApp Business Platform, where, since 1 July 2025, Meta charges per delivered template message; replies inside a 24-hour customer service window are free. Neither bot may message a user who never opted in.

Telegram's Bots FAQ gives the pace: roughly one message per second to a single chat, no more than 20 messages per minute to one group, and about 30 per second when notifying many users. Above that, paid broadcasts reach up to 1,000 messages per second at 0.1 Stars per message, for bots that hold at least 100,000 Stars and 100,000 monthly active users. Meta's pricing page sets three paid template categories (marketing, utility and authentication) with rates by recipient country, and says "All non-template messages are free" inside the open window.

The row that kills most briefs is the first one. Telegram's introduction for developers says bots "can't start conversations with users", so a Telegram bot audience is built from people who pressed Start. Tools sold as Telegram "DM bots" that write to strangers run on personal accounts instead, the pattern dissected in the guide to cold DM scripts and automation tools. WhatsApp reaches the same end by charging for every business-initiated message and requiring template approval.

Telegram vs WhatsApp for business: which suits customer messaging?

Telegram vs WhatsApp for business depends on whether customers write to you or you publish to them. WhatsApp Business, a free app plus the paid Business Platform, suits support and transactional messages in markets where customers already live in WhatsApp. Telegram suits businesses that publish: a channel for updates, a bot for orders and payments with no Telegram commission, and Telegram Business tools that come free with Premium. Many companies run both, each for its job.

On the WhatsApp side, the Business app adds a catalog, labels and quick replies, while the Business Platform adds API access for software and CRM integration at per-template prices. On the Telegram side, the Telegram vs WhatsApp business comparison favours Telegram on cost: Telegram's Business blog post says "all Telegram Business features are available for free to Premium subscribers", connected bots also work for non-Premium users, and Telegram's payments documentation says Telegram "takes no commission". The details, from opening hours to chatbots answering in your name, are in Telegram Business features, price and selling tools.

WhatsApp Business vs Telegram also differs in who controls outreach. WhatsApp enforces the opt-in through money and template review; Telegram enforces it through the bot rule and its Spam FAQ, which says that for private messages "it really doesn't matter what you send, as long as the receivers find it unwelcome". Neither app is a channel for cold sales. The Telegram side of DM marketing and the Telegram affiliate program shows where private messaging to customers stops being allowed.

Budget is the last test. A price comparison of mass messaging services by channel puts SMS, WhatsApp templates, email and a Telegram bot side by side; Telegram is the only one with no per-message fee at normal speed, and the only one with a hard technical bar against messaging people who never opted in. For a programme built on that bar, see Telegram broadcast messaging to opted-in subscribers.

How do Signal, Session, Threema and iMessage compare with Telegram?

Signal, Session, Threema and iMessage all encrypt chats end to end by default, which Telegram does only in Secret Chats. They differ in identity and funding: Signal is a nonprofit using phone numbers plus usernames; Session needs no phone number or email and routes messages through onion requests; Threema is a paid Swiss app usable without any number; iMessage works only between Apple devices. None offers Telegram's public channels or open bot platform at Telegram's scale.

Signal private messenger vs Telegram

In a Signal private messenger vs Telegram comparison, Signal encrypts every chat, group and call end to end, and its protocol is the one WhatsApp adopted. Signal says it is "a nonprofit, unlike almost every other consumer tech company", and estimated it would need about $50 million a year to operate by 2025. Telegram offers more public features; Signal offers less data to anyone, including Signal.

Session vs Telegram

Session vs Telegram is a contrast in identity. Session's FAQ says no phone number or email is needed to make an account, that messages travel through "a decentralised onion routing network similar to Tor", and that Session "does not collect any geolocation data, metadata, or any other data about the device or network you are using". The project is stewarded by the Session Technology Foundation. The cost is recovery: losing the recovery password means losing the Account ID.

Threema vs Telegram

Threema vs Telegram turns on payment and jurisdiction. Threema is sold as a paid licence, can be used "without providing a phone number and email address", and is provided by Threema AG, where "primarily Swiss law" applies, according to Threema's FAQ. Its Threema Safe backups are encrypted and can sit on your own server. Telegram is free, larger and public; Threema is small, closed and paid.

Telegram vs iMessage

Telegram vs iMessage is a platform question first. iMessage runs only between Apple devices, so it cannot be a channel to an audience that includes Android users. On security it leads the field: Apple's security research blog describes its PQ3 protocol, rolled out with iOS 17.4, as "the first messaging protocol to reach what we call Level 3 security". Telegram's cloud chats offer none of that, but they open on any phone and the web.

Telegram vs WhatsApp: which is better for which job?

Telegram vs WhatsApp which is better has no single answer, because the apps were built for different jobs. WhatsApp is better for private conversation with people you know, end to end by default and present on almost every phone. Telegram is better for publishing to people who chose to follow you, for communities above 1,024 members, for large files across devices and for bots that cost nothing per message. The table maps common jobs to the app that fits.

The short version of WA vs Telegram for a business: if your customers message you, go where they are, which is often WhatsApp. If you message your audience, Telegram's channels and bots cost less and scale further. Running several Telegram accounts for different brands is allowed within limits; the rules are in running multiple Telegram accounts versus buying them.

When neither app is the right tool

Neither Telegram nor WhatsApp fits every case. Both are poor channels for reaching people who never opted in, both can be restricted or blocked by national regulators, and neither replaces email for long-form records or legally required notices. Regulated sectors such as finance and health often face retention rules that consumer chat apps do not meet without an archiving layer. In those cases the honest answer is a different channel, not a different messenger.

Consent law also sits above both platforms. In the EU, Directive 2002/58/EC requires prior consent for direct marketing by electronic message, and that obligation does not change with the app. Crypto and trading communities face extra scrutiny on Telegram; what Telegram itself documents for crypto Telegram groups and bots is narrower than most sellers of those groups suggest. And an audience of a few dozen colleagues needs neither: a shared inbox or a work chat tool is simpler.

What neither company publishes

Some numbers buyers ask for do not exist in either company's documentation. Telegram publishes no threshold for how many private messages to strangers trigger a limit, no restriction schedule and no appeal criteria. Meta publishes rates and the 24-hour window, but its pricing page sets no public send speed per number. Any "safe daily limit" quoted for either app comes from a vendor, not from Telegram or WhatsApp.

Telegram's API documentation also lists no entry for PEER_FLOOD, the error personal accounts report after sending to too many strangers, and WhatsApp publishes no figure for how many reports close an account. Where a page here could not find a primary figure, it says so rather than borrow one. That is the working rule Sendhaus describes for its own projects and the work it declines, and it is why no table above carries a number from a vendor blog.

Frequently asked questions

Sources

• Telegram FAQ — 1 billion active users, 200,000-member groups, 2 GB files, server-client and client-client encryption, distributed data centers.
• Telegram Channels FAQ — unlimited subscribers, first 200 invited by the owner.
• Telegram Privacy Policy — more than 1 billion users, 12-month metadata, automated spam analysis of cloud chats.
• Telegram Spam FAQ — unwelcome private messages.
• Telegram blog, Telegram Business — Business features free with Premium.
• Telegram, Bots: an introduction for developers — bots can't start conversations with users.
• Telegram Bots FAQ — per-chat, per-group and bulk pace; paid broadcasts.
• Telegram Bot Payments API — Telegram takes no commission.
• WhatsApp security page — default privacy, no phone-number search.
• WhatsApp security advisories — end-to-end encryption on the Signal Protocol, completed in 2016.
• WhatsApp blog, Communities now available — 1,024-member groups, 3 November 2022.
• WhatsApp blog, Introducing WhatsApp Channels — one-way broadcast, not end to end by default, 30-day history.
• Meta, WhatsApp Business Platform pricing — per-message pricing from 1 July 2025, free non-template messages in the 24-hour window.
• Signal blog, Signal is expensive — nonprofit status and the $50 million estimate.
• Session FAQ — no phone number, onion requests, Session Technology Foundation.
• Threema FAQ — use without phone number or email, Threema AG, Swiss law.
• Apple Security Research, iMessage with PQ3 — Level 3 security, iOS 17.4.
• Directive 2002/58/EC — consent for direct marketing by electronic message.