Trengo

Trengo's Boost plan costs $325/month. €299/mo annual (~$325 USD). 10 users, 6,000 conversations/year. Overage is €15–18 per 100 conversations plus a 10% surcharge. Voice and broadcasting are separate add-ons (verified on trengo.com/prices, 2026-08-18). For comparison, Converge costs $49/month flat for up to 15 team members.

Trengo is best suited for european businesses needing gdpr-compliant multi-channel support with whatsapp and voice. Its standout feature is flowbot no-code automation and ai helpmate for whatsapp and other channels.

There are 49+ platforms you can compare with Trengo in the customer support platform category. Each comparison above shows detailed feature and pricing differences to help you choose.

The best Trengo alternative depends on what pushed you to switch. If the conversations-based pricing and forced 10-user packages are the problem, a flat-rate unified inbox like Converge ($49/month for up to 15 agents, unlimited conversations) removes both. If you need a like-for-like omnichannel inbox with WhatsApp broadcasting and voice, Front and Respond.io are the closest feature matches but use per-seat or usage-based pricing. For European GDPR-focused teams, the EU-hosted options matter most. There is no single best pick — match the alternative to whether your blocker is price, channels, or compliance. If your blocker is the AI agent or the Flowbot builder, no flat-rate messaging inbox replaces those, and switching will cost you capability.

Trengo does not block the message — it sends, then bills you at the end of the cycle with a 10% penalty on top. Trengo's help centre states the open balance is multiplied by your conversation bundle price and then an additional 10% fee is applied, and gives this worked example: 45 excess conversations at €0.18 each bills as (45 × €0.18) plus 10% = €8.91 (help.trengo.com, conversation usage and additional charges, updated March 2025). Buying blocks in advance avoids the 10%, but one-time blocks do not roll into your recurring commitment — the next cycle resets to your committed amount. That is the mechanic behind most complaints about unpredictable Trengo invoices.

Only on annual plans. Trengo's help centre is explicit: monthly subscribers who do not use the full quota lose the remainder with no refund, while yearly subscribers carry unused conversations to the next month because the cycle spans the whole year (help.trengo.com, Conversations in Trengo, updated September 2025). This makes the monthly-vs-annual choice bigger than the headline €299 vs €349 gap on Boost. Seasonal businesses on monthly billing pay full price through quiet months, then hit the 10% overage surcharge during peak — the exact months annual billing would have covered from banked quota. Auto-replies are excluded from the count on both billing modes.

Trengo does not support Discord or Zalo on any plan, so teams that need those channels have to look elsewhere. Converge has native Discord (bot token + app ID) and Zalo OA support alongside WhatsApp, Telegram, Messenger, Instagram, Gmail, email, and an embeddable widget — at $49/month flat for up to 15 agents. Native Zalo integration in particular is rare among unified-inbox platforms, which matters for businesses serving the Vietnamese market. Discord support matters for gaming, crypto, and developer communities that run support inside their server.