Try SecurEnvoy

An Internet based SMS gateway provider.

SMS messages are sent via the Internet to a company that hosts a gateway connection to worldwide mobile phone network providers.

SecurEnvoy currently support the following third parties:

2SMS

www.2sms.com

AQL

www.aql.com

Clickatel

www.clickatell.com

CM

securenvoy.cmtelecom.com

Dynmark

www.dynmark.com

end2end

www.promessaging.net

FastSMS

https://fastsms.co.uk/

Grapevine

www.vine.co.za/

HSL SMS

www.hslsms.com

Messagebird

https://www.messagebird.com/nl/

Mollie

www.mollie.nl

O2 via Infracast

www.infracast.com

PSWinCom

www.pswin.com

Rapide

www.rapide.co.uk/

Silver Street

www.silverstreet.com

smsglobal

www.smsglobal.com

SMS Tech

www.smstech.com.au/

Stream SMS

www.streamsms.ru

SureSMS

https://www.suresms.com/en/

SystorVest

www.systorvest.no

T-Mobile

www.tmobile.co.uk

T-Systems

www.t-systems.de/

V-First

www.vfirst.com

Web SMS

www.websms.com

Note: Any other SMS gateway provider that supports https, flash and / or message overwrite can be added for 2 days consultancy